<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>

 .float-left {
    float: left;
    width: 200px;
    background-color: aqua;

  }
  .text-content {
    overflow: hidden; 
    /* 触发 BFC */
  }

    </style>
</head>
<body>
       
<div class="float-left">1</div>
<div class="text-content">不会被浮动元素环绕的文本</div>
<div class="float-left">2</div>
<!-- 看不出来区别。。之前的吗 -->

</body>
</html>